Intensity-invariant subpicosecond absorption saturation in heavy-ion irradiated bulk GaAs
- 21 December 1998
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 73 (25) , 3715-3717
- https://doi.org/10.1063/1.122873
Abstract
We demonstrate that bulk GaAs irradiated by heavy Au+ ions shows efficient saturable absorption with subpicosecond recovery time and without any relaxation rate saturation up to excitation densities as high as 1.6 mJ/cm2. A comparison with other types of ion irradiation shows that heavy-ion-irradiated GaAs is a very promising material for ultrafast optoelectronics and optical processing at high repetition rates.Keywords
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